Improvement in churns



' CO'PELAND @L MARTiN.,

`Rotary Churn.'

No. A35,588.. Y 'Patented dumm, 2862*.

Mmmm. V l. www? Zfyffo i To all' whom "it `"may concern,.-

Beit known' that weyJOHN COPELAND and u GEoEeE l?. MARTIN, both ofQuasqueton, in the county of Buchanan and State of Iowa, have inventedafnew and Improved Churn; and we do hereby declare that the following isafull, clear, andlexact description of the same, reference being had tothe accompany- `ing drawings,lforming` part of this specificaf tion, inWhich-f: y I Figure l` represents an end elevation of our l invention.`n Fig.2 is a longitudinal vertical section of the samen Y y l Similarletters of reference in both views n indicate correspondingparts. I I"Thisinvention consists in the arrangement I of'inclined scoops on theinner surfaces of the sides of a rotary polygonal tub inmsuch a mann nerthat bythe actionfof said scoops the cream is carried up and thrownalternately against the heads or ends of the tub, whereby butter is madein a shortatime, and with `comparatively little labor. l s1 y Itconsists "also inthe" arrangement of a T- v shaped tube, thestemofgwhich passes through lone of the trunnions of I the rotary tub,while its cross-tube is placed in a vertical direction in the interiorof the tub and pressed up tight l n against the inner side of the head,and against a leather washer `or other suitablepaeking l i placedbetween it and said head in such a man-H `ner that the escape of creamthrough the head rior of theT-shaped tube, is prevented, and at the sametime the external air has free access to theinteriorof the tub.

`'llo enable'those skilled inthe artto make and use our invention, wewill proceed to describe its construction and operation with referenceto the drawings.` I l p The box or tubAis made in the form of a siX-sided or polygonal prisma, and one side is cutopen and provided with-adoor, B. It rotates on trunnions IC, which project from their bearingsin'asuitalole frame,E. A crank, F, serves to impart to the tub thedesired rotary motion. 1`

l i UNITED STATES t `and trunnionof the tub, or through the `intethecenters of the heads D, and which have l P IvrEIxITv OFFICE.A

JOHN `coPEIlAND AND GEORGE BQMAETIN, o'E QUAsoUE'roN, Iowa.

IMPROVEMENT IN oHuRNs.

Specification forming part of Letters Patent No. 35,588, dated June 17,1862.

To the inner surfaces of the sides of the tub' Aascoops G are securedinroblique directions and in such positions that they throw the creamalternately toward one head and then toward the other. By these meansbutter forms very "rapidly and with comparatively little labor of theoperator.

[The air required for the formation of butter is admittedto the tub through a Tshaped tube, H, the-stem a of which passes through the centerof one of the trunnions, while its two arms, b, are arranged in theinterior of the ftub in a verticaldirection, as olearly'shown in Fig. 2.A spring, c, which is secured to the stem a of the tube H, pulls thearms b close up against the inner surface of the head of the tub, and apackingfring, d, which is placed between said arms and thehead, preventsleakage through the trunnion.

By the position of the arms b of the 'lf-shaped tube H the escape ofcream through said tube is prevented and the air has free access to theinterior of the tub. l

By the combined action of the T-shaped air-tube H and scoops G our churnis rendered very effective. The butter formsin a short time, and itseparates perfectly from the cream,

so that the remaining liquid can be drawn olil u without difficulty.

Having thus fully described our invention, what we claim as new,anddesire to secure by Letters Patent, is- Y y 1. The arrangement ofoblique scoops G on the inner surfaces of the sides of a prismaticalrot-ary tub, fA, constructed and operating substantially as and for thepurposes described.

2. The T-shaped air-tube H, passing through one of the'trunnions C ofthe rotary tub A, in

.combination with the spring c and packingring d, constructed andoperating substantially as and for the purpose specified.

JOHN COPELAND. G. l?. MARTIN;

Vlitnesses:`

HENRY M. S'IEvENs, Y. I. C. BAssEtrT.

